AMDGPU - reference manual online

AMD RADEON GPU video driver.

Chapter

xf86-video-amdgpu 1.1.0

AMDGPU(4) Kernel Interfaces Manual AMDGPU(4)NAME
amdgpu - AMD RADEON GPU video driver
SYNOPSIS
Section "Device"
Identifier "devname"
Driver "amdgpu"
...
EndSection
DESCRIPTION
amdgpu is an Xorg driver for AMD RADEON-based video cards with the following features:
· Support for 24-bit pixel depth;
· RandR support up to version 1.4;
· 3D acceleration;
SUPPORTED HARDWARE
The amdgpu driver supports CI and newer families' video cards.
CONFIGURATION DETAILS
Please refer to xorg.conf(5) for general configuration details. This section only covers
configuration details specific to this driver.
The following driver Options are supported:
Option "SWcursor" "boolean"
Selects software cursor. The default is off.
Option "Accel" "boolean"
Enables or disables all hardware acceleration.
The default is on.
Option "ZaphodHeads" "string"
Specify the RandR output(s) to use with zaphod mode for a particular driver
instance. If you use this option you must use this option for all instances of the
driver.
For example: Option "ZaphodHeads" "LVDS,VGA-0" will assign xrandr outputs LVDS and
VGA-0 to this instance of the driver.
Option "DRI" "integer"
Define the maximum level of DRI to enable. Valid values are 2 for DRI2 or 3 for
DRI3. The default is 2 for DRI2.
Option "EnablePageFlip" "boolean"
Enable DRI2 page flipping. The default is on.
Option "TearFree" "boolean"
Enable tearing prevention using the hardware page flipping mechanism. This option
currently doesn't have any effect for CRTCs using transforms other than rotation or
reflection. It requires allocating two separate scanout buffers for each supported
CRTC. Enabling this option currently disables Option "EnablePageFlip". The default
is off.
Option "AccelMethod" "string"
Setting this option to none disables use of the glamor acceleration architecture.
In that case, all 2D rendering is done by the CPU, but 3D and video hardware accel‐
eration can still work. This is mainly useful for OpenGL driver bring-up.
The default is to use glamor.
The following driver Option is supported for glamor :
Option "ShadowPrimary" "boolean"
This option enables a so-called "shadow primary" buffer for fast CPU access to
pixel data, and separate scanout buffers for each display controller (CRTC). This
may improve performance for some 2D workloads, potentially at the expense of other
(e.g. 3D, video) workloads. Note in particular that enabling this option currently
disables page flipping. The default is off.
SEE ALSOXorg(1), xorg.conf(5), Xserver(1), X(7)
1. Wiki page:
http://www.x.org/wiki/radeon
2. Overview about amdgpu development code:
http://cgit.freedesktop.org/xorg/driver/xf86-video-amdgpu/
3. Mailing list:
http://lists.x.org/mailman/listinfo/xorg-driver-ati
4. IRC channel:
#radeon on irc.freenode.net
5. Query the bugtracker for amdgpu bugs:
https://bugs.freedesktop.org/query.cgi?product=xorg&component=Driver/AMDgpu
6. Submit bugs & patches:
https://bugs.freedesktop.org/enter_bug.cgi?product=xorg&component=Driver/AMDgpu
AUTHORS
Authors include:
Michel Dänzer @daenzer.net
Alex Deucher @gmail.comX Version 11 xf86-video-amdgpu 1.1.0 AMDGPU(4)